The world’s most populous nation has finally caught up, and now surpassed the USA in total Android and iOS activations. New numbers from analytics firm Flurry show that Chinese mobile users activated more devices in February than any other country. This increase in new devices came with a huge rise in application usage on the order of 1126%, year over year.

Flurry makes use of more than 1 billion aggregated app launches of over 160,000 different apps each day to come to its conclusions. This data set is large enough that Flurry can estimate the number of new devices being activated each month.

The numbers clearly show that in February, China’s share of worldwide Android and iOS activations shot up to 23%, while the US share dropped to 22%. The trend is continuing this month with Chinese users activating 24% as the US falls to 21%. The installed user base of mobile devices in the US is still quite a bit larger than China, but at this rate, that won’t be the case for long.

Application developers could have a huge opportunity as Chinese consumers continue to adopt smartphones. That 1126% increase in app usage was far and away the biggest increase of any country. In fact, the US isn’t even in the top ten for increased app usage.

There are two principal reasons for this trend, and the first is that China is, for the first time, developing an affluent middle-class. More people than ever before have the resources to buy smartphones and tablets. This has been helped by the increasing rollout of mid-range devices on the Android side. Many OEMs are making Android phones designed for emerging markets like China. Don’t expect mobile adoption in China to slow down anytime soon.